Year Persons 1998-01-01 317400 1999-01-01 321525 2000-01-01 322650 2001-01-01 320850 2002-01-01 318775 2003-01-01 317600 2004-01-01 317000 2005-01-01 318500 2006-01-01 320625 2007-01-01 322125 2008-01-01 321850 2009-01-01 321250 2010-01-01 321575 2011-01-01 321950 2012-01-01 322300 2013-01-01 320100 2014-01-01 317225 2015-01-01 314125 2016-01-01 309525 2017-01-01 305425